Robot 450C

The 450C is basically the same as the 1200C, but with less memory and
as a consequence restricted operational modes.

The main differences between the two models lie in their relative
display capabilities and possible a colour combinations.

The 450C has a 128 pixel by 120 line display, producing 15360 pixels,
but still remains compatible with 240 line reception, and 4096
possible colour combinations. Apart from these differences the
specifications and operation of the 1200C and the 450C remain much the
same.